发明人李文辉,张德明,高志强. "Method for the Synthesis of 3-Aminobenzofuran-2-carboxylic acid" [P]. 中国发明专利, 专利号 CN 113281389 A, 授权公告日 2021-03-04.
发明人张德明,胡光,赵玉洁. "A Process for Preparing High-Purity 3-Aminobenzofuran-2-carboxylic acid" [P]. 中国发明专利, 专利号 CN 116816120 B, 授权公告日 2022-05-13.
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